Patents by Inventor Hung Liang Cho

Hung Liang Cho has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Power supply system with multiple power sources in parallel
    Patent number: 9071079
    Abstract: The present disclosure provides a power supply system. The power supply system includes a plurality of power supply devices connected in parallel. Output terminals of the plurality of power supply devices are coupled to a common supply line. Each of the plurality of power supply devices includes a DC-to-DC converter, a transformer, a switching control device, a rectifying device, and a judging device. The judging device receives a feedback voltage, an error signal and a second AC voltage to determine whether the power supply device is normal, wherein the feedback voltage is a voltage division of an output voltage on the common supply line, the error signal is an output of the switching control device, and the second AC voltage is retrieved from a second winding set of the transformer.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: June 30, 2015
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chu Kuang Liu, Ching Long Tsai, Hung Liang Cho, Wei Hsin Wen
  • POWER SUPPLY SYSTEM WITH MULTIPLE POWER SOURCES IN PARALLEL
    Publication number: 20120212059
    Abstract: The present disclosure provides a power supply system. The power supply system includes a plurality of power supply devices connected in parallel. Output terminals of the plurality of power supply devices are coupled to a common supply line. Each of the plurality of power supply devices includes a DC-to-DC converter, a transformer, a switching control device, a rectifying device, and a judging device. The judging device receives a feedback voltage, an error signal and a second AC voltage to determine whether the power supply device is normal, wherein the feedback voltage is a voltage division of an output voltage on the common supply line, the error signal is an output of the switching control device, and the second AC voltage is retrieved from a second winding set of the transformer.
    Type: Application
    Filed: October 17, 2011
    Publication date: August 23, 2012
    Inventors: Chu Kuang Liu, Ching Long Tsai, Hung Liang Cho, Wei Hsin Wen